
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
 
<!-- viewport meta to reset iPhone inital scale -->
<meta name="viewport" content="width=device-width, initial-scale=1.0">
 
<title>urls</title>
 
<!-- css3-mediaqueries.js for IE8 or older -->
<!--[if lt IE 9]>
	<script src="http://css3-mediaqueries-js.googlecode.com/svn/trunk/css3-mediaqueries.js"></script>
<![endif]-->
 
<style type="text/css">
 
body {
	font: 1em/150% Arial, Helvetica, sans-serif;
}
a {
	color: #669;
	text-decoration: none;
}
a:hover {
	text-decoration: underline;
}
h1 {
	font: bold 36px/100% Arial, Helvetica, sans-serif;
}
 
/************************************************************************************
STRUCTURE
*************************************************************************************/
#pagewrap {
	padding: 5px;
	width: 960px;
	margin: 20px auto;
}
#header {
	height: 180px;
}
#content {
	width: 600px;
	float: left;
}
#sidebar {
	width: 300px;
	float: right;
}
#footer {
	clear: both;
}
 
/************************************************************************************
MEDIA QUERIES
*************************************************************************************/
/* for 980px or less */
@media screen and (max-width: 980px) {
	
	#pagewrap {
		width: 94%;
	}
	#content {
		width: 65%;
	}
	#sidebar {
		width: 30%;
	}
 
}
 
/* for 700px or less */
@media screen and (max-width: 700px) {
 
	#content {
		width: auto;
		float: none;
	}
	#sidebar {
		width: auto;
		float: none;
	}
 
}
 
/* for 480px or less */
@media screen and (max-width: 480px) {
 
	#header {
		height: auto;
	}
	h1 {
		font-size: 24px;
	}
	#sidebar {
		display: none;
	}
 
}
 
/* border & guideline (you can ignore these) */
#content {
	background: #f8f8f8;
}
#sidebar {
	background: #f0efef;
}
#header, #content, #sidebar {
	margin-bottom: 5px;
}
#pagewrap, #header, #content, #sidebar, #footer {
	border: solid 1px lightgrey;
}
 
</style>
</head>
 
<body>
 
<div id="pagewrap">
 
	<div id="header">
		<h1>Header</h1>
		<p>链接 <a href="">暂无</a>)</p>
	</div>
 
	<div id="content">
		<h2>Content</h2>
		<p>text</p>
		<p>text</p>
		<p>text</p>
		<p>text</p>
		<p>text</p>
		<p>text</p>
		<p>text</p>
		<p>text</p>
		<p>text</p>
		<p>text</p>
	</div>
 
	<div id="sidebar">
		<h3>Sidebar</h3>
		<p>text</p>
		<p>text</p>
	</div>
	
	<div id="footer">
		<h4>Footer</h4>
	</div>
 
</div>
 
</body>
</html>